TY  - BOOK
AU  - Warwick Donald P. Ed
AU  -  Osherson Samuel
TI  - Comparative research methods
T2  - Prentice-Hall series in General Sociology
U1  - Sigma:f, L3 
PY  - 1973///
CY  - New Jersey 
PB  - Prentice Hall     
KW  - SOCIAL SCIENCES
ER  -